1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/string.h> 19 #include <linux/netdevice.h> 20 #include <linux/module.h> 21 #include <brcmu_wifi.h> 22 #include <brcmu_utils.h> 23 #include "core.h" 24 #include "bus.h" 25 #include "debug.h" 26 #include "fwil.h" 27 #include "fwil_types.h" 28 #include "tracepoint.h" 29 #include "common.h" 30 #include "of.h" 31 32 MODULE_AUTHOR("Broadcom Corporation"); 33 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); 34 MODULE_LICENSE("Dual BSD/GPL"); 35 36 const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 37 38 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 39 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 40 41 /* default boost value for RSSI_DELTA in preferred join selection */ 42 #define BRCMF_JOIN_PREF_RSSI_BOOST 8 43 44 #define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ 45 46 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; 47 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); 48 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]"); 49 50 /* Debug level configuration. See debug.h for bits, sysfs modifiable */ 51 int brcmf_msg_level; 52 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR); 53 MODULE_PARM_DESC(debug, "Level of debug output"); 54 55 static int brcmf_p2p_enable; 56 module_param_named(p2pon, brcmf_p2p_enable, int, 0); 57 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality"); 58 59 static int brcmf_feature_disable; 60 module_param_named(feature_disable, brcmf_feature_disable, int, 0); 61 MODULE_PARM_DESC(feature_disable, "Disable features"); 62 63 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN]; 64 module_param_string(alternative_fw_path, brcmf_firmware_path, 65 BRCMF_FW_ALTPATH_LEN, S_IRUSR); 66 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path"); 67 68 static int brcmf_fcmode; 69 module_param_named(fcmode, brcmf_fcmode, int, 0); 70 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control"); 71 72 static int brcmf_roamoff; 73 module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR); 74 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine"); 75 76 #ifdef DEBUG 77 /* always succeed brcmf_bus_started() */ 78 static int brcmf_ignore_probe_fail; 79 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0); 80 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging"); 81 #endif 82 83 static struct brcmfmac_platform_data *brcmfmac_pdata; 84 struct brcmf_mp_global_t brcmf_mp_global; 85 86 void brcmf_c_set_joinpref_default(struct brcmf_if *ifp) 87 { 88 struct brcmf_join_pref_params join_pref_params[2]; 89 int err; 90 91 /* Setup join_pref to select target by RSSI (boost on 5GHz) */ 92 join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA; 93 join_pref_params[0].len = 2; 94 join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST; 95 join_pref_params[0].band = WLC_BAND_5G; 96 97 join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI; 98 join_pref_params[1].len = 2; 99 join_pref_params[1].rssi_gain = 0; 100 join_pref_params[1].band = 0; 101 err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params, 102 sizeof(join_pref_params)); 103 if (err) 104 brcmf_err("Set join_pref error (%d)\n", err); 105 } 106 107 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) 108 { 109 s8 eventmask[BRCMF_EVENTING_MASK_LEN]; 110 u8 buf[BRCMF_DCMD_SMLEN]; 111 struct brcmf_rev_info_le revinfo; 112 struct brcmf_rev_info *ri; 113 char *ptr; 114 s32 err; 115 116 /* retreive mac address */ 117 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, 118 sizeof(ifp->mac_addr)); 119 if (err < 0) { 120 brcmf_err("Retreiving cur_etheraddr failed, %d\n", err); 121 goto done; 122 } 123 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); 124 125 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO, 126 &revinfo, sizeof(revinfo)); 127 ri = &ifp->drvr->revinfo; 128 if (err < 0) { 129 brcmf_err("retrieving revision info failed, %d\n", err); 130 } else { 131 ri->vendorid = le32_to_cpu(revinfo.vendorid); 132 ri->deviceid = le32_to_cpu(revinfo.deviceid); 133 ri->radiorev = le32_to_cpu(revinfo.radiorev); 134 ri->chiprev = le32_to_cpu(revinfo.chiprev); 135 ri->corerev = le32_to_cpu(revinfo.corerev); 136 ri->boardid = le32_to_cpu(revinfo.boardid); 137 ri->boardvendor = le32_to_cpu(revinfo.boardvendor); 138 ri->boardrev = le32_to_cpu(revinfo.boardrev); 139 ri->driverrev = le32_to_cpu(revinfo.driverrev); 140 ri->ucoderev = le32_to_cpu(revinfo.ucoderev); 141 ri->bus = le32_to_cpu(revinfo.bus); 142 ri->chipnum = le32_to_cpu(revinfo.chipnum); 143 ri->phytype = le32_to_cpu(revinfo.phytype); 144 ri->phyrev = le32_to_cpu(revinfo.phyrev); 145 ri->anarev = le32_to_cpu(revinfo.anarev); 146 ri->chippkg = le32_to_cpu(revinfo.chippkg); 147 ri->nvramrev = le32_to_cpu(revinfo.nvramrev); 148 } 149 ri->result = err; 150 151 /* query for 'ver' to get version info from firmware */ 152 memset(buf, 0, sizeof(buf)); 153 strcpy(buf, "ver"); 154 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); 155 if (err < 0) { 156 brcmf_err("Retreiving version information failed, %d\n", 157 err); 158 goto done; 159 } 160 ptr = (char *)buf; 161 strsep(&ptr, "\n"); 162 163 /* Print fw version info */ 164 brcmf_info("Firmware version = %s\n", buf); 165 166 /* locate firmware version number for ethtool */ 167 ptr = strrchr(buf, ' ') + 1; 168 strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); 169 170 /* set mpc */ 171 err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); 172 if (err) { 173 brcmf_err("failed setting mpc\n"); 174 goto done; 175 } 176 177 brcmf_c_set_joinpref_default(ifp); 178 179 /* Setup event_msgs, enable E_IF */ 180 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, 181 BRCMF_EVENTING_MASK_LEN); 182 if (err) { 183 brcmf_err("Get event_msgs error (%d)\n", err); 184 goto done; 185 } 186 setbit(eventmask, BRCMF_E_IF); 187 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, 188 BRCMF_EVENTING_MASK_LEN); 189 if (err) { 190 brcmf_err("Set event_msgs error (%d)\n", err); 191 goto done; 192 } 193 194 /* Setup default scan channel time */ 195 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, 196 BRCMF_DEFAULT_SCAN_CHANNEL_TIME); 197 if (err) { 198 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", 199 err); 200 goto done; 201 } 202 203 /* Setup default scan unassoc time */ 204 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, 205 BRCMF_DEFAULT_SCAN_UNASSOC_TIME); 206 if (err) { 207 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", 208 err); 209 goto done; 210 } 211 212 /* Enable tx beamforming, errors can be ignored (not supported) */ 213 (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1); 214 215 /* do bus specific preinit here */ 216 err = brcmf_bus_preinit(ifp->drvr->bus_if); 217 done: 218 return err; 219 } 220 221 #ifndef CONFIG_BRCM_TRACING 222 void __brcmf_err(const char *func, const char *fmt, ...) 223 { 224 struct va_format vaf; 225 va_list args; 226 227 va_start(args, fmt); 228 229 vaf.fmt = fmt; 230 vaf.va = &args; 231 pr_err("%s: %pV", func, &vaf); 232 233 va_end(args); 234 } 235 #endif 236 237 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) 238 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) 239 { 240 struct va_format vaf = { 241 .fmt = fmt, 242 }; 243 va_list args; 244 245 va_start(args, fmt); 246 vaf.va = &args; 247 if (brcmf_msg_level & level) 248 pr_debug("%s %pV", func, &vaf); 249 trace_brcmf_dbg(level, func, &vaf); 250 va_end(args); 251 } 252 #endif 253 254 static void brcmf_mp_attach(void) 255 { 256 /* If module param firmware path is set then this will always be used, 257 * if not set then if available use the platform data version. To make 258 * sure it gets initialized at all, always copy the module param version 259 */ 260 strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path, 261 BRCMF_FW_ALTPATH_LEN); 262 if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) && 263 (brcmf_mp_global.firmware_path[0] == '\0')) { 264 strlcpy(brcmf_mp_global.firmware_path, 265 brcmfmac_pdata->fw_alternative_path, 266 BRCMF_FW_ALTPATH_LEN); 267 } 268 } 269 270 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, 271 enum brcmf_bus_type bus_type, 272 u32 chip, u32 chiprev) 273 { 274 struct brcmf_mp_device *settings; 275 struct brcmfmac_pd_device *device_pd; 276 bool found; 277 int i; 278 279 brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip, 280 chiprev); 281 settings = kzalloc(sizeof(*settings), GFP_ATOMIC); 282 if (!settings) 283 return NULL; 284 285 /* start by using the module paramaters */ 286 settings->p2p_enable = !!brcmf_p2p_enable; 287 settings->feature_disable = brcmf_feature_disable; 288 settings->fcmode = brcmf_fcmode; 289 settings->roamoff = !!brcmf_roamoff; 290 #ifdef DEBUG 291 settings->ignore_probe_fail = !!brcmf_ignore_probe_fail; 292 #endif 293 294 if (bus_type == BRCMF_BUSTYPE_SDIO) 295 settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz; 296 297 /* See if there is any device specific platform data configured */ 298 found = false; 299 if (brcmfmac_pdata) { 300 for (i = 0; i < brcmfmac_pdata->device_count; i++) { 301 device_pd = &brcmfmac_pdata->devices[i]; 302 if ((device_pd->bus_type == bus_type) && 303 (device_pd->id == chip) && 304 ((device_pd->rev == chiprev) || 305 (device_pd->rev == -1))) { 306 brcmf_dbg(INFO, "Platform data for device found\n"); 307 settings->country_codes = 308 device_pd->country_codes; 309 if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO) 310 memcpy(&settings->bus.sdio, 311 &device_pd->bus.sdio, 312 sizeof(settings->bus.sdio)); 313 found = true; 314 break; 315 } 316 } 317 } 318 if (!found) { 319 /* No platform data for this device, try OF (Open Firwmare) */ 320 brcmf_of_probe(dev, bus_type, settings); 321 } 322 return settings; 323 } 324 325 void brcmf_release_module_param(struct brcmf_mp_device *module_param) 326 { 327 kfree(module_param); 328 } 329 330 static int __init brcmf_common_pd_probe(struct platform_device *pdev) 331 { 332 brcmf_dbg(INFO, "Enter\n"); 333 334 brcmfmac_pdata = dev_get_platdata(&pdev->dev); 335 336 if (brcmfmac_pdata->power_on) 337 brcmfmac_pdata->power_on(); 338 339 return 0; 340 } 341 342 static int brcmf_common_pd_remove(struct platform_device *pdev) 343 { 344 brcmf_dbg(INFO, "Enter\n"); 345 346 if (brcmfmac_pdata->power_off) 347 brcmfmac_pdata->power_off(); 348 349 return 0; 350 } 351 352 static struct platform_driver brcmf_pd = { 353 .remove = brcmf_common_pd_remove, 354 .driver = { 355 .name = BRCMFMAC_PDATA_NAME, 356 } 357 }; 358 359 static int __init brcmfmac_module_init(void) 360 { 361 int err; 362 363 /* Initialize debug system first */ 364 brcmf_debugfs_init(); 365 366 /* Get the platform data (if available) for our devices */ 367 err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe); 368 if (err == -ENODEV) 369 brcmf_dbg(INFO, "No platform data available.\n"); 370 371 /* Initialize global module paramaters */ 372 brcmf_mp_attach(); 373 374 /* Continue the initialization by registering the different busses */ 375 err = brcmf_core_init(); 376 if (err) { 377 brcmf_debugfs_exit(); 378 if (brcmfmac_pdata) 379 platform_driver_unregister(&brcmf_pd); 380 } 381 382 return err; 383 } 384 385 static void __exit brcmfmac_module_exit(void) 386 { 387 brcmf_core_exit(); 388 if (brcmfmac_pdata) 389 platform_driver_unregister(&brcmf_pd); 390 brcmf_debugfs_exit(); 391 } 392 393 module_init(brcmfmac_module_init); 394 module_exit(brcmfmac_module_exit); 395 396